Marine Weather and Tides
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.
|Sunrise 5:58AM||Sunset 8:41PM||Saturday May 25, 2019 6:54 AM EDT (10:54 UTC)||Moonrise 12:41AM||Moonset 10:59AM||Illumination 61%|
7 Day Forecast for Marine Location Near Powhatan Point, OHHourly EDIT Help
Area Discussion for - Pittsburgh, PA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus61 kpbz 250935|
area forecast discussion
national weather service pittsburgh pa
535 am edt Sat may 25 2019
A return of warm, wet weather can be expected over the weekend.
Strong to severe storms are possible on both Saturday and Sunday. A
cold front will move through by Sunday night, making for a brief
break in rain.
Near term through tonight
The region sits at the northern periphery of a strong SE CONUS high
pressure. Heights will lower as the upper-level flow becomes more
quasi-zonal with the influence of a strong low pressure over south-central
canada. Insolation and deep moist, warm air advection in the
boundary layer under modest mid-level lapse rates will lead to rather
substantial destabilization by late morning. Ensembles cluster
mlcape values around 1500 j kg during peak heating.
A weak perturbation in the flow may help initiate some isolated
convection in the late morning and early afternoon. Model soundings
depict a rather favorable environment for all modes of severe
weather, though the primary threat will be strong and possibly
damaging downburst winds in the strongest of cells.
More widespread convection will be likely later in the afternoon and
evening with the passage of a weak trough. Discrete convection is
expected at first, though some convective allowing models (cams)
suggest organization into a MCS is possible by the early evening. All
modes of severe weather will be possible. The tornado threat
increases later in the day as low level hodograph profile and storm
motion becomes more favorable for the ingestion of streamwise
vorticity. However, the earlier convection and cloud cover may
possibly mar this second round if available buoyancy becomes limited.
Convection will exit the region to the east by midnight with the
trough passage. Temperatures will remain warm through the period,
with highs in the upper 70s and 80s expected Saturday and lows in the
60s Saturday night.
Short term Sunday through Sunday night
Models suggest a weak boundary will stall across the northern
portion of the CWA by Sunday morning, which may act as an initial
focus Sunday afternoon before the arrival of a cold front. Another
weak shortwave, embedded in quasi-zonal flow on the northern
periphery of southeast CONUS high pressure, will progress through the
region late Sunday afternoon.
Convection will initiate by mid afternoon as the atmosphere
undergoes diurnal destabilization under modest mid-level lapse
rates. The frontal boundary will gradually progress southward through|
the afternoon and evening. Sufficient deep layer shear and lift
should promote loosely organized storms moving close to parallel that
of the w-e oriented cold front boundary. With such motion, localized
heavy rain and flash flooding is certainly possible and will have to
By late evening, convection will have diminished as ridging and
subsidence builds in wake of the shortwave trough. The region will be
in a bit of a saddle point in terms of low level flow. With little or
no wind and a likely saturated boundary layer, dense fog formation
is certainly possible Monday morning. This will be highly dependent
on the antecedent convection. Temperatures will fall into the 50s to
low 60s by dawn Monday.
Long term Monday through Friday
Strong southeast CONUS ridging will continue to influence our
sensible weather. Warm conditions will continue through the forecast
with daily rain chances with each passing shortwave trough on the
northern periphery of this high.
Models do suggest a longwave pattern change by next weekend.
However, the area will likely remain in quasi-zonal flow aloft, with
several transient shortwave troughs, and thus, periodic rain chances.
Aviation 10z Saturday through Wednesday
GeneralVFR forecast through the period. Model are portraying a line
of spotty showers iso trw moving across the region during the late
morning and early afternoon hours. Because of the hit or miss nature
of this activity, have decided to leave out the mention due to low
confidence that any shower storm will hit an airport. Have introduced
showers storms at all PORTS during the late afternoon and evening
hours as a pre-frontal trough swings through the region. Reduction in
vis and CIGS are possible with any convection.
As the surface pressure gradient tightens this afternoon, south-
southwest wind gusts of 15 to 20 kts are possible.
Periodic restrictions are possible Sunday with additional showers and
thunderstorms along a stationary boundary. Additional rounds of
precipitation is expected after Tuesday.
Pbz watches warnings advisories
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Wheeling, Wheeling Ohio County Airport, WV||24 mi||62 min||SSE 5||10.00 mi||Fair||65°F||57°F||78%||1018.4 hPa|
Wind History from HLG (wind in knots)
|1 day ago||SW||SW|
|2 days ago||E||E||E||E||SE||SE||SE|
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GOES Local Image of EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Pittsburgh, PA (6,6,7,8)(on/off)  Help
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